Shelf bracket



FIG. 1 is a perspective view of a shelf bracket showing our new design;

FIG. 2 is a first side view thereof;

FIG. 3 is a second side view thereof;

FIG. 4 is front elevational view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a top plan view thereof.

The broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a shelf bracket, as shown and described. 